Foot operated switch mechanism



May 9,- 933.. RK. WINNHNG FOOT OPERATED SWITCH MECHANISM Filed March 29,1930 Vlieg:

akku/Mw yao Patented May 9, 1933 UNITED STATES PATENT OFFICE ROBERT K.WINNING, 0F VTAUWATOSA, 'WISCONSIN, ASSIGIIOR 'IO CLUM MANUFACTUR- ING'COMPANY, OF MILWAUKEE, WISCONSIN, A CORPORATION OF WISCONSIN Foo'rOPERATED SWITCH MEoHANrsM Application filed March 29, 1930.

This inventionl relates to improvements in v foot operated switchmechanisms. The type of switch herein disclosed is particularly adaptedfor controlling head light and dimming circuits in automotive work, andthe present application constitutes a companion to my application370,249 now Patent No. 1,768,028, dated June 10, 1930.

1t is the primary object ofthe present in- "vention to provide furthersimplification of structure, to facilitate the manufacture of theindividual parts and their assembly. It is also my` purpose to eliminaterack mechanism heretofore used in the operation of a switch of thischaracter, and to provide for the positive pedal operation of the switchwhile` eliminating any possibility of an open circuit. It is also mypurpose to provide for a positive snap action in making as well asbreaking the circuits. Y

In the drawing:

Figure 1 is a side elevation of a switch embodying this invention, withportions of its terminal head broken away to expose the interiormechanism. i

Figure 2 is a similar view with the terminal head and contacts whollyremoved, the pedal and associated parts being shown in section.

Figure 3 is a sectional view taken in the plane indicated at 3-3 in Fig.1.

Figure 4 is a sectional view taken in the plane indicated at 4--4 inFig. 2, and illus- 'trating in vdotted lines themethod of assembly. .v

Figure 5 is a detail View in elevation, of the rear ofthe movingcontacter showing the ratchet teeth thereof.

Figure 6 is a detail view showing the pre- 'ferred construction forestablishing one circuit before the other is broken.

Like parts are identified bythe same reference characters throughout theseveral views.

The switch case 7 carries a mounting plate `8 which is welded thereto,the ,tubular guide 9 being riveted to the mounting plate before theWelding operation. The pedal rod 10 is reciprocable through guide 9 inthe usual way and carries a combined pedal and spring guard 11 withinwhich, and about the guide Serf al No. 439,914.

9, compression spring 12 for raising the pedal.

The inner end of rod 10 is bifurcatcd, and a pin or rivet 15 crosses theslot between the legs thus formed at the end of the rod.

Centrally riveted in the case 7 is a stud or post 16 upon which I mounta cup-shaped spacer 17 at the level of the slot which bifurcates the endof rod 10. Centered upon this stud, and positioned by the spacing member17, is a Contact actuator 18 best shown in Figs. 2 and 4. r1`he actuatorcomprises a sheet metal plate of generally disk-like contour upon whichare formed ratchet teeth 19 and a radially extending arm :20 which is inpivotal connection with the pedal rod 10 upon the pin 15 thereof. Margin21 of this arm is iinished to engage a Wall of casing 7 to limit theoutward movement of the pedal.

A slot at in the arm is engaged over pin 15. The arm itself tits closelyinto the slot of the pedal rod and serves to fix the rotative positionthereof. The parts are-assembled by thrusting arm Q0 into the slot ofthe rod with the actuating disk or plate 18 held erect, as shown indotted lines in Fig. 4. 4The assembled actuator 18 and pedal are thenrotated upon the aizis of the pedal through the intermediate dotted lineposition of Fig. 4 to pin 16 in the course of the movement de" scribed.Y

The moving contact carrier is now positi'oned on stud 16, upon which itrotates with an intermittent step movement. The contact carrier 25 has adielectric body portion which may conveniently be made of a phenolcondensation product. The rearof this body portion has ratchet teeth at26 complementary to the teeth 19 of the actuator.

The front face of the contact carrier 25 is likewise provided withratchet teeth at 27. The entire approaches to alternate teeth arecovered with the sheet metal contact 28 which has tongues at Q9extending about the margins of the Contact carrier to anchor the con-Case 7 is closed by a dielectric terminal head 33 which carriesterminals 34 and contact springs 35, 36-and 37. These sp act as dogs forengagement with ratchet teeth 5 27 of the moving contact They alsofurnish the n resilient pressure for proper o the ratchet teeth 19 ofthe actuator and the complementary teeth 26 at the rear of the movingcontact carrier.

1 Finally they-serve as xedcontacts with which themo contact 28interacts to establish circuitgnalternately between'the current su plyterminal sprin 35 and the current de very springs 36 an 37. The suppllvl5 35 is in ent en ment wi :heoentral disk 30 of the moving contact 28,whereas contacls 36 and 37 are alternately engagedl with e movingcontact exce t at the moment o when they arexboth therewith atthesameThe construction is such that one of the s rings 36 or 37 over one ofthe teeth slightly inadvance of the other. By referring to Fi 6 it willbe observed that spring 37 has topped from its nonconducttooth intoengagement with the portion cliligthe lmoving contact 28 therebeneath.The

snap action resul `from the passa of the s ring over the too has eliminaarcing.

t this moment .contact spring 36 is still engaged with the movingcontact 28 Aat the top of the tooth over -which this spring is about topass. Thus circuits are closed from i springs 36 and 37 mo- If pedal 11is not given a ull stroke, but its stroke 1s suliicient to engage sp 37with its tooth, the return movement lcvililgthe pedal will neverthelesscausesl a slight additional rotation of the contact carrier suilicientto enga spr' 36 behind its tooth also.

e shi-gEt additional rotation of the contactfcarrier` reduced in thereturn movement of the pedalJ is partially attributable to the Y andthereby the lengthening, of spring 3 as teeth 19 and 26 pass each otherin the' return movement of the parts. As these ratchet teeth pass, theyforce the con ltJact carrier forward axiaazlly owilidtll, there- !OOUP'l 513mg e 051311118 con are us compressed, the pedal approaches thelimit of its outward stroke, and ther-ratchet teeth: 19 and V26reach-'the point wheigethey interinesh in a new position of enent.-teeth, particularly the l dofi' teeth l), do lnot have ceairy, e nmargins an conasquen y, 05 under the p of the contact springs,

rovided a double ratchet is eective even though the pedal is not movedfor a full stroke and.

which, in either of a plurality of positions, is suicient to hold theparts for a change of circuit. I have likewise provided a mechanism inwhich a distinct snap action occurs both in the make and break of theelectrical circuits, ensured by the fact that contact is established atthe bottom of the respective teeth instead of being broken at thebottoms thereof, as in the device shown in my previous application aboveidentified.

The mechanism herein disclosed operates with little friction, easilymanufactured, and its assembly is greatly facilitated, the last itembeing very important as com ared with any existing structures lfor simiar purposes.

I claim:

1. A switch comprising the combination with a support carrying a tubularguide and a pivot stud anchored at one end to said support and havingits opposite end free of an" axially slotted rod reciprocable in saidguide and rovided with a pin extending trans'- its parts are simple and'l verse y of the slot therein, a contact actuator fulcrum'ed upon thestud and rovided with a bifurcated arm en aged wit in the slot of saidrod and exten ing at each side of the pin, together with relativelyfixed and movable contactant which the latter is arranged' to receivemovement from rod being dependent upon said actuator for its rotative''tion w en the parts are as'- sembled,'an said contact actuator to swingonto and 0B of the free end of said stud.

2; A switch comprising an apertured cass provided with a'central pivotstud anchored at one end to said case, a rod reci rocahle through theaperture of the case an the following elements disposed on said stud inthe" order recited, a positioning memberapertured to receive t eoscillatable upon the stud and bearing upon said member, an armpivotallyccnnectmg said' actuator, said being free to rotate to allowstud, a contact actuator said actuator with said rod, and a set ofrela-I tivel th fixed and movable contacts of which ormeilare mounted on thecase and the latter are mounted onsaid stud and operable by saidactuator.

3. A comprising an apertured -case provided witha central pivot studanchored at one end'to said case, a rod reci through the aperture of thecase an the following elements disposed on said stud in the orderrecited, a positioning member apertured'to receive the stud, a contactactuator iai-e rocable al A 1931, in the name of Walter H. Wedger, andthe sole applied to the shoe bottom and held under pressure while thecement sets. The softener may be applied both to the sole and to theshoe bottom, though under most conditions it is entirely satisfactory toapply it only to the sole. The pressure can advantageously be applied tothe shoe and sole with the aid of a machine of the character disclosedin an a plication for Letters Patent of the United tates Serial No.388,739, liled August 27, 1929 in the name of Milton H. Ballard.

After the sole has been attached its edge is trimmed, set, etc., a heel52 attached, the last removed and the shoe treed in the usual manner.

The welted constru my improved shoe eliminates tion of the forepart ofthe tendency to burn the foot which is found in many shoes having cementattached soles and results from the sealing or air-proofing action ofthe film of cement between the outsole and the shoe upper in such shoes.In this respect the shoes manufactured in accordance with my inventionresemble Goodyear welt shoes and permit the so-called breathing throughthe inseam which prevents overheating of the foot. On the other hand,the shank construction herein disclosed permits the use, if desired, ofsoles having extremely narrow shank portions, cottage roof Shanks orindeed Shanks of any other desired character. In this connection itshould be noted `r that moldedor conformed soles may be used and thatthe fitting of wood heels is facilitated in that the construction of theshoe bottom permits the width of the sole at the heel breast line to begoverned exactly by the width of the heel.

Having thus described my invention what I claim as new and desire to secure by Letters Patent of the United States is:

1. A shoe having its upper secured in lastf ed relation to its insole atits shank portion by staples driven through the marginal portion of theupper materials and into the insole in such a manner that the legs oi?the staples are deflected withoutpassing entirely through the insole,and having its upper at the forepart held in lasted relation to theinsole by stitching passing through a welt extending about the forepartof the shoe and through the marginal portion of the shoe upperand thebetween substance of the insole, the outsole of the shoe being securedto the mar -nal portion of the shoe upper at the shan and to the weltingextending about the forepart of the shoe upper as well as to theadjacent portion of the shoe bottom by pyroxylin cemen 2. A shoe havingits upper secured at its shank portion in lasted relation to its insoleby fastening? driven through the marginal portion of t e upper and intothe insole in such a manner that they do not extend entirely throu h theinsole, and having its upper at the orepart held in lasted relation tothe insole by stitching passing through the between substance of theinsole, the marginal portion of the shoe upper and a welt extendingabout the forepart of the shoe, the outsole of the shoe being cementattached to the marginal portion of the shoe upper at the shank and tothe welting extending about the forepart of the shoe upper as well as t0the adjacent portion of the shoe bottom.

3. That -improvement in methods of manufacturing shoes which comprisesmounting upon the bottom of a last an insole the :torepart of which isprovided with a peripherally extending lip located a short distance fromthe margin of the insole, working the man ginal portion of. the shoeupper into lasted relation to the insole, securing it in lasted relationflat against the shank portion of the insole with permanent fasteningsand against the lip at the forepart of the insole, stitching a welt tothe marginal portion of the lasted shoe upper and to the lip at theforepart of the insole, trimming the surplus upper, welt and insole-lipmaterial from the shoe bottom, and attaching an outsole to the shoebottom with pyroxylin cement.

4. That improvement in methods of manufacturing shoes which comprisesmounting upon the bottom of a last an insole the forepart of which isprovided with a peripherally extending lip located, a short distancefrom the margin of the insole and the shank portion of which is withoutsuch a lip, Working the marginal portion of the shoe upper into lastedrelation to the insole, securing the upper in lasted osition fiatagainst the marginal portion ol) the insole at the shank by insertingpermanent astenings, securing the forepart of the shoe upper also inlasted relation to the insole, thereafter stitching a welt to themarginal portion ofthe forepart of the lasted shoe upper and to the lipat the forepart of the insole, trimming the surplus material from thelip of the insole, the margin of the shoe upper and the portion of thewelt adjacent thereto about the forepart of the shoe, and cementattaching an outsole to the shoe bottom.

5. That improvement in methods of manuacturing shoes which comprisesmounting upon the bottom of a last an insole the forepart of which isprovided with a peripherally extending lip located a short distance fromthe margin of the insole'and the shank portion of which is without sucha lip, working the marginal portion oi: the shoe upper into lastedrelation to the insole and securing it in lasted relation at the shankby staples driven through the marginal portion of the upper into thebody of the insole and curving through the substance of the insolewithout extending to the inner surface of the insole, securin the foreart of the shoe u per, at least rom the orward end of t e shank portionto about the ti line, by staples driven through the margina rtion of the5 upper and the lip of the inso e, stitching a Welt to the marginalortion of the lasted shoe upper and to the ip of the insole, said weltextending from the forward end of the shank portion of the shoe aboutthe toe and back to the forward end of the shank ortion on the otherside, trimming' the surp us material from the lip of the insole, themargin of the shoe upper and the ortion of the welt adjacent theretoabout t e forepart of l5 the shoe, roughening the o'verlasted mar 'nalportion of the shoe upper at the shank o the shoe and the welt as wellas the trimmed edge surfaces of the insole lip, shoe upper and welt atthe forepart of the shoe, and cement attaching an outsole to the shoebottom.

In testimony whereof I have signed my name to this specification.

OSCAR C. ADAMS.

